Connectivity Guide
In the State eld, true indicates that the port is enabled. In the Reason eld, Is UP indicates that hardware resources are allocated.
OS10# show monitor session all
S.Id Source Destination Dir SrcIP DstIP DSCP TTL State Reason
----------------------------------------------------------------------
1 ethernet1/1/7 ethernet1/1/1 rx N/A N/A N/A N/A true Is UP
Remote port monitoring
Remote port monitoring monitors ingress and/or egress trac on multiple source ports of multiple devices and forwards the monitored
trac to multiple destination ports on dierent remote devices. Remote port monitoring helps network administrators monitor and analyze
trac to troubleshoot network problems.
In a remote port monitoring session, monitored trac is tagged with a VLAN ID and switched on a user-dened, non-routable L2 VLAN.
The VLAN is reserved to carry only monitored trac, which is forwarded on all egress ports of the VLAN. You must congure each
intermediate switch that participates in transporting monitored trac with the reserved L2 VLAN. Remote port monitoring supports
monitoring sessions where multiple source and destination ports distribute across multiple network devices.
Session and VLAN requirements
RPM requires the following:
• Source session, such as monitored ports on dierent source devices.
• Reserved tagged VLAN for transporting monitored trac congured on source, intermediate, and destination devices.
• Destination session, where destination ports connect to analyzers on destination devices.
Congure any network device with source and destination ports. Enable the network device to function in an intermediate transport
session for a reserved VLAN for multiple remote port monitoring sessions. You can enable and disable individual monitoring sessions.
Consider the following when conguring a RPM session:
• A remote port monitoring session mirrors monitored trac by prexing the reserved VLAN tag to monitored packets to transmit using
the reserved VLAN.
• The source address, destination address, and original VLAN ID of the mirrored packet are prexed with the tagged VLAN header.
Untagged source packets are tagged with the reserved VLAN ID.
• The member port of the reserved VLAN must have the MTU and IPMTU value as MAX+4 to hold the VLAN tag parameter.
Layer 2
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